boost

[bcdesigns]

me again

My car almost did the first 1000km with this turbo, and its time to push it to the 1,45bar instead of the 1,3bar...

I have the standart remap of mihnea

Yesterday, i rev the car in 4th on a hard climb to see the boost:

2000rpm -> -0,8 bar (pedal released)
2001rpm -> 0,0bar
3000rpm -> 1,0bar
4000rpm -> 1,3bar (that i thing is the hy value (3500rpm to 4000rpm), and then in the boost gauge, the needle starts to tremble)
5000rpm -> 0,8 bar ( is less that stock chips i think)
7000rpm -> 0,7 or less (less than stock)


So i was thinking that the spring of wastegate was weak because it was opened and cleaned ... and the screw was released (just 10mm or less measured screw to the top WG by my eyes)

Today, i unplugged the WGFV (n-75 i think, a new one) in the electric connector (i think that is the correct procedure to see mechanical boost) and go it for a ride.

In second gear:

2000rpm -> -1,0 bar
2001rpm -> 0,3 bar
3000rpm -> 0,5 bar
4000rpm -> 0,3 bar
5000rpm -> 0,2 bar

So, my doubts are:

The procedure that i did today is the correct one???

The correct mechanical boost is 0,4bar, but isn't correct do 0,4 bar until the redline???

Is correct that the needle of the boost gauge tremble in the maximum boost (is a black screen auto gauge connected in the ECU pipe)???

I was thinking that the car didn't did the boost that Mihnea told me because the of the weaked WG spring, but if the car do 0,5bar mechanical, the car had to do 1,45 bar on the 4000rpm in 4th if everything is ok, rigth???

just can tell that the car is very smooth on revs, and pull strong (all my friends that have turbo cars say that the remap seems very good because it pulls hard in all rev), so couldn't be a boost leak i think


Can you give me an advices?

[bcdesigns]

Many views, zero answers, already have shame/fear to post here!

[quattronutter]

anything to do with ambiet air temps causing reduced boost pressure?,best to check it on vagcom to see if any senders etc are faulty..

[bcdesigns]

The procedure that i did today is the correct one???

The correct mechanical boost is 0,4bar, but isn't correct do 0,4 bar until the redline???

Is correct that the needle of the boost gauge tremble in the maximum boost (is a black screen auto gauge connected in the ECU pipe)???

I was thinking that the car didn't did the boost that Mihnea told me because the of the weaked WG spring, but if the car do 0,5bar mechanical, the car had to do 1,45 bar on the 4000rpm in 4th if everything is ok, rigth???

Please, I know that some of you can answer to these questions while play cards and drink some beers. I have to know if everything is correct to move on to others solutions, some leak or something....

[bcdesigns]

[bcdesigns]

i am the hollow man

[S2sedan]

Do like I did, buy a BMW. I was always worried about my car, boost leaks and some other stuffs, but now M Power rocks.

Sorry guys, i still around the forum, as is very special and informative, but i could not stand my S2 Limousine anymore.

[bcdesigns]

M power, i know the e34 well, great sound and pulls hard, even if is a bmw, i think we are here for power and fun in cars, no matter what car isi!

The problem is solved, i want to say thank you to Mihnea, my car today was sweat to drive, in the BIG boost gauge of the workshop the car did many time 1,45 in third and fourth gear, and all test did more than 1,3bar... picked 1,5bar less than 4000rpm one time...

Now, is time to Ap brakes and better traction/suspension.

Thanks.

[S2sedan]

Nice to hear that ...

You were luckier than me !

[PeteRR]

E34 M5?........fair play, hell of a car. I'd have one tommorow. Though its the only BM I really desire!

[S2sedan]

thank's ... I have to say that I am very pleased with my M5. very comfortable with koni and eibach, very reliable, handles very good, breaks ok for the size and weight and is quite fast.